Analysis on the Changes of Meteorological Disasters in Camellia oleifera in Henan Province
Based on the temperature,precipitation,and sunshine data from the national meteorological observation stations in the main producing areas of Camellia oleifera in Henan Province from 1991 to 2022,the mathematical statistics method was used to analyze the changing patterns of meteorological disasters in Camellia oleifera in Henan Province.The results showed that:(1)From 1991 to 2022,there were 161 meteorological disasters in Camellia oleifera in Henan Province,with a frequency of 50.31 disasters per 10 years.The occurrence of disasters showed a significant decreasing trend,with a decrease rate of 1.47 disasters per 10 years.(2)The occurrence of low temperature disasters during the young fruit stage was the most frequent,followed by low temperature and low sunshine during the flower stage,while high temperature disasters were least likely to occur during the oil conversion and accumulation stage.The frequency of low temperature occurrences in the young fruit stage and low temperature with low sunshine occurrences in the flower stage was significantly higher compared to other types of disasters.(3)The total oc-currence frequency of disasters in each time period was the highest in Tongbai County,except for the end of the 20th century,when the total occurrence frequency was the lowest in Guangshan County.(4)Xinxian County needs to focus on preventing low-temperature and rainy disasters during the flowering stage.In addition to Xinxian County,low-temperature and rainy disasters dur-ing the flowering stage,low-temperature disasters during the young fruit stage,and rainy disasters during the fruit ripening stage all showed a north-to-south trend.The frequency of drought disasters during the peak period of fruit expansion was relatively high in the central and southern regions of the main producing areas of camellia oleifera.High-temperature disasters during the oil con-version and accumulation stage occurred only in extreme years in each county in 2022.(5)The northern region of the main pro-ducing areas of camellia oleifera in Henan Province needs to be protected against low-temperature and rainy disasters,the moun-tainous areas need to be protected against low-temperature disasters,and the central and southern regions need to be protected a-gainst high-temperature disasters.
Camellia oleiferaMeteorological disastersChange patternHenan Province
国家科技期刊平台
NSTL
万方数据
